老練の時空剣士、若返る ～二度目の人生、弱きを救うため爺は若い体で無双する～, Roren No Jiku Ken Shi, Wakagaeru Ni Dome No Jinsei, Yowaki Wo Suku Tame Ji Ha Wakai Karada De Muso Suru

At the age of 200, he was supposed to end his life after one final great achievement… But when he opened his eyes, he found himself reborn as a baby! Thus begins the second life of Cross Elfid. Unlike his lonely previous life, this time he vows to save the weak and live by helping others, guided by the many bonds he forms. From a princess who is also the strongest knight, to a genius potion-maker from a prestigious family, and even a brave heroine wielding the power of lightning—Cross spends sweet, heartwarming days surrounded by remarkable companions. Yet, with the experience of his 200-year-long former life and overwhelming cheat abilities, he continues to dominate every challenge that comes his way!